Perhaps you should try some spelling variations:
sach kho » bach khoa, sach dao, sach nha
kho tang » cao tang
gian lan » gian lang, gian dan, giang van
te sach » toc sach
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
dac va » day va, dat va, dai va
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach kho tang xa hoi. hieu va cac ((dac va) OR (duc va)) ((gianh lai) or (gian lan)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach kho tang xa hoi. hieu va cac ((dac va) OR (duc va)) ((gianh lai) OR (gian lan)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach kho tang xa hoi. hieu va cac ((dac va) OR (duc va)) ((gianh lai) or (gian lan)) cua te".
• Adding a wildcard symbol may retrieve word variants: te sach kho tang xa hoi. hieu va cac ((dac va) OR (duc va)) ((gianh lai) or (gian lan)) cua te*.